<!DOCTYPE html>
<html lang="zh">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>手写DOM</title>
    <style>
      .red {
        background: red;
      }
    </style>
  </head>
  <body>
    示例
    <div>
      <div id="test">
        <p class="red"></p>
      </div>
      <div id="test2">
        <p class="red"></p>
      </div>
    </div>
    <div id="empty">
      <div id="e1"></div>
      <div id="e2"></div>
      <div id="e3"></div>
    </div>
    <div id="siblings">
      <div id="s1"></div>
      <div id="s2"></div>
      <div id="s3"></div>
    </div>
    <div id="travel">
      <div id="t1">t1</div>
      <div id="t2">t2</div>
      <div id="t3">t3</div>
    </div>
    <script src="dom.js"></script>
    <script src="main.js"></script>
  </body>
</html>
